R: Color overlaps in Venn diagram by size of overlap?

I think Venn diagrams are an extremly usefull way of comparing data. The problem is that as soon as I start having m...

matplot pie: rotate labels horizontally?

Using matplot to create a little gauge with the code below: group_size=[10,10,10,10,10,50] labels=['AAAA',...

create a radial chart with d3.js?

I want to create a chart like this (shown in picture) using d3.js Any idea from where I should start. I have exper...

How do I convert a numpy array to (and display) an image??

I have created an array thusly: import numpy as np data = np.zeros( (512,512,3), dtype=np.uint8) data[256,256] = [2...